{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["adverse effect"], "input": "We describe two cases of PSVT that changed to non - sustained polymorphic ventricular tachycardia after administration of verapamil ."}
{"adverse effect": [{"subject": "non - sustained polymorphic ventricular tachycardia", "object": "verapamil"}]}